TBH, I think we need a player like that to be both Maddison's backup as well as starting alongside him when we want to really attacking.
Biss on his own behind them should be fine.
I just don't like Gallagher cos he'd be super expensive and he's not that good, and as you said he's not very technical.
I do get that however to be fair he has been Chavs best midfielder start of this season and was great at Palace. He is a proper fighter, tough as nails type player with crazy energy and good goal scoring instincts. We could do a lot worse.
He won’t be as nice to watch though, if he covers Maddison he is more likely to smash his way to assists and goals than finesse his way to them.
Eze is my top pick but Gallagher is decent and shouldn’t be sniffed at.